...Maokun Ye; Hamn-Ching Chen; Arjen Koop _ In this study, we perform CFD simulations for the NTNU Blind Test 2 experiment, in which two turbines were placed in a closed-loop wind tunnel and operating in line. The Reynolds-averaged Navier Stokes (RANS) equations with the k -ω SST turbulence model...

... model (Blumberg and Mellor, 1987; Mellor, 2003). The main feature of POM is the use of so-called sigma coordinates for the description of the ocean vertical structure (i.e., xed number of variable-thickness layers, scaled on the water column depth). Basic equations of the model include equations...

... marine transportation china government quadrupole hydrofoil cavity equation upstream oil & gas cavitation naca66 formula formulation acoustic directivity hydrofoil cavitation cavitation noise polar engineering International Journal of Offshore and Polar Engineering (ISSN 1053-5381...

...Pengxuan Luo; Jingxin Zhang _ The immersed boundary method (IBM) is used to numerically model boundaries in complex geometry and moving boundaries in the fixed mesh system. The core idea of this method is to introduce virtual force terms into momentum equations to replace physical boundaries...

.... 124 Two-phase CFD Simulation of Breaking Waves Impacting a Coastal Vertical Wall with a Recurved Parapet Advanced numerical simulation codes based on the computational uid dynamics (CFD) approach for solving the Navier Stokes equations for both the liquid and gas phases offer an alternative approach...

... breakwater time sery polar engineering amplitude dissipation wavemaker algorithm equation numerical study International Journal of Offshore and Polar Engineering (ISSN 1053-5381) Copyright © by The International Society of Offshore and Polar Engineers Vol. 33, No. 1, March 2023, pp. 62 70...

... to the security of ocean engineering structures. The generation, propagation, and evolution of nonlinear internal waves are understood based on various mathematical models and equations, such as the Korteweg de Vries (KdV) equation (Korteweg and de Vries, 1895), the Benjamin Ono equation (Iório, 1986...

...Ruud Selker; Joost Brugmans; Ping Liu; Carlos Sicilia _ The results of the analytical limit-state equations in DNV standard DNV-ST-F101 (2021), a prevailing design standard for submarine pipeline systems, are not always in line with those of detailed finite-element models. Under certain conditions...

... an ice cover have not been well studied. 5 7 2022 29 8 2022 29 8 2022 1 12 2022 1 12 2022 Copyright 2022, The International Society of Offshore and Polar Engineers dawson equation ice cover upstream oil & gas coefficient spheroid extremum submarine...

... specimen pipeline steel fracture toughness hydrogen pipeline hydrogen concentration linepipe steel international journal effect equation san marchi mpa International Journal of Offshore and Polar Engineering (ISSN 1053-5381) Copyright © by The International Society of Offshore and Polar...

... Stokes equations. In this work, different head shapes, entry velocities, interval times, and interval distances were discussed for their in uences on the drag force coef cient and cavity evolution. However, it is still challenging to accurately simulate the water splashing with a large deformation...

... and measurements in actual seas. In this paper, a self-organizing state–space model is realized based on a three-degrees-of-freedom motion equation. The state variables and parameters of the model can be estimated simultaneously. The self-organizing state–space model is updated via measurement data in real time...

... and a nonvanishing vorticity that varies exponentially with depth over a flat bed. In contrast to previous studies, current and vorticity were primarily determined from the Euler equations. The solution satisfies the Euler equations, including all boundary conditions, and closely accords with well-known experimental...

... are derived through consideration of Taylor-series expansion up to second-order differential terms. The derived consistent discretization schemes are applied to the calculations of a Laplacian term of pressure in the Poisson pressure equation (PPE) and pressure gradient term in the momentum equation...

... current interactions (Zhang et al., 2013). Fig. 1 Detailed sketch of the numerical model Flow Model Within the framework of OpenFOAM®, Higuera et al. (2013) developed IHFoam (also named as Ola ow later), which is employed for wave current structure interactions, based on VARANS equations. In terms...

...) also experimented with a model of the ISSC TLP to measure the force and then obtained the response of the platform solving the equations of motion. Zhou and Wu (2015) and Zhou et al. (2017) studied the springing induced by triple frequency wave force for a TLP and barge, respectively...

... because of its higher computational efficiency. The standard weakly compressible SPH has the issue of pressure fluctuations. Two typical WCSPH models developed to eliminate pressure fluctuations are the δ-SPH and Riemann-SPH models. The δ-SPH model introduces a diffusive term in the continuity equation...

... a coupled system of nonlinear equations that will describe, with minimum assumptions, the processes taking place in the vessel-rope-iceberg system. These comprehensive numerical simulations require space-time discretization and signi cant computational resources. To formulate the system of equations...

... 2022 1 3 2022 reservoir characterization engineering tensor ice model equation reservoir simulation upstream oil & gas ice load ice particle structural model particle stress tensor ice-structure interaction international journal interaction experimental data level ice...

... loading in one of the prevailing submarine-pipeline design standards, DNVGL-ST-F101 (2017), are stated to be valid only for pipelines with a diameter-to-wall-thickness ratio ( D/t ) between 15 and 45. The European Pipeline Research Group evaluated whether the existing design equations can be used for very...